Malicious PDF — malware analysis report

Static analysis result for SHA-256 98f2a0d75a37df93…

MALICIOUS

PDF

40.1 KB Created: 2020-08-31 08:24:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6db946f2bfc79704fa1962452f6d3444 SHA-1: 1764a5e1bd433ed7acbd9a74b474338eec2aa53e SHA-256: 98f2a0d75a37df93b819ee0cdc133cc92be8cd0c670a980f733bb633bdc3bb32
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

This PDF file contains a large number of embedded links, many of which point to a link farm hosted on cdn.shopify.com. One of the primary links, however, redirects to a known malicious domain, ttraff.com, which is likely used for further redirection or to host malicious content. The document body, though heavily obfuscated, contains the same malicious URL, suggesting an attempt to disguise the malicious intent with a seemingly innocuous topic.

Heuristics 3

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.com/wix?keyword=digital+clock+face+template+printable
    • https://cdn.shopify.com/s/files/1/0431/3972/7509/files/dayz_standalone_autorun.pdf
    • https://cdn.shopify.com/s/files/1/0432/6955/4329/files/boku_no_pico_ova2.pdf
    • https://cdn.shopify.com/s/files/1/0434/4784/5021/files/chris_hemsworth_workout_routine.pdf
    • https://cdn.shopify.com/s/files/1/0431/2861/9168/files/41476763425.pdf
    • https://static.usrfiles.com/ugd/b8c837_4dcefac056d8418eb110fe0e33b14c3f.pdf
    • https://static.usrfiles.com/ugd/b8c837_868d8264d78d4aec8feb2fc91f93e382.pdf
    • https://cdn.shopify.com/s/files/1/0431/0577/9863/files/5462549623.pdf
    • https://cdn.shopify.com/s/files/1/0429/9735/0554/files/chiku_buku_raile_video_song.pdf
    • https://cdn.shopify.com/s/files/1/0430/4932/0610/files/50721103714.pdf
    • https://cdn.shopify.com/s/files/1/0430/3152/7575/files/freeletics_strength_guide.pdf
    • https://cdn.shopify.com/s/files/1/0433/8126/0440/files/66993277935.pdf
    • https://cdn.shopify.com/s/files/1/0430/3316/5986/files/kutize.pdf
    • https://cdn.shopify.com/s/files/1/0428/7463/4403/files/nozugikezexufomutudugidu.pdf
    • https://cdn.shopify.com/s/files/1/0435/5702/8001/files/vifez.pdf
    • https://cdn.shopify.com/s/files/1/0434/4987/6630/files/bir_cash_disbursement_book_format.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005f34.bin
d681300e668bea1710c5661ba713e8f99234f8643128315980ae334931a35692		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F34 5360 bytes
font_01_sfnt_off00007162.bin
4359c566b799d2a7a4d832f16e68ba97d63ad4b70c759e08fbc369ebb12c1b3c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7162 10012 bytes

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